Corey Taylor
From Tardis Wiki, the free Doctor Who reference
Corey Taylor provided the roar for both the Fisher King and the Twelfth Doctor's hologram ghost in the Doctor Who episode Before the Flood.
He is the lead singer of the heavy metal bands Slipknot, Stone Sour, and a Doctor Who fan. He was given a tour of the set and agreed to provide his signature roar for the episode.
